Universal coupling.



A. B. DEA GER.

UNIVERSALCOUPLING.

APPLICATION FILED JAN. 12, 1911.

1,033,68 1 Patented July 23,1912.

-: f Q1 g ALEXANDER BERNHARD DRAGER, or L'UBE CK. GERMANY, ASSIGNOE TO THE FIRM OF DRAGERVJERK HEINR. 6: BERNH. BERGER, OF LUBECK, GERMANY.

UNIVERSAL Specification of Letters Eatent.

COUPLING.

Patented July 333, 2.53.3

Application filed January 12, 1911. Serial No. 602,233.

To all whom it may concern:

Be it known that l, ALEXANDER BERNHARH Dir-lions, a subject of the German Emperor, and resident of Liilieck, in the German Em pire, have invented certain new and useful Improvements in Universal Couplings, oil which the following is aspecification. l

The invention relates to connecting devices, that is to say, devices for forming" joints between readily interchangeable hol- I low bodies and conduits in whirh the said l l ll bodies are inserted the object being to form a perfectly airtight joint in addition to insuring speedy interchangeability, as necessary for example in the case of air regerr erating or breathing cartridges for freely portable breathing (or so-called life-saving) apparatus which must be changed in the presence of poisonous gases. The invention resides mainly in the fact that a resilient or 1 elastic Washer is arranged around each coo nccting nipple of the conduit in such niannor that it rests upon plates adapted to be displaced in the manner of a Card'an joint; each of these plates rocks about an axis, the two axes crossing or intersecting Owing to this arrangement, even when the cartridge is given an oblique position between the connecting devices the said washers rest uniformly around the cartridge apertures, so that inexactit-ude in the position of the packing surfaces and irregularities in the external form of the cartridge do not endanger the formation of an air-tight jfllnt.

In the accompanying sheet of drawings:

Fi ure 1 shows iartl in section a, part of the portable breathing apparatus Viz, a breathing cartridge inserted between the connecting nipples of the inlet and outlet boxes of the air conduit and heid in position and in air-tight connection each end by a device constructed in accordance with and embodying my invention; the device connecting the lower or bottom end of the car tridge with the connecting nipple shows a somewhat modified form of construction; the middle portion of-the cartridge and the rods connecting the said inlet and outlet boxes being brol en away. Fl 22 to 6 are detailed views in perspective the inlet box and the several parts constituting the improved resilient or elastic connecting device of the first embodiment of the invention. Figs. 7 to 9 are detailed views in per- 1 spective of the several parts constituting the i l g g l 2! l i l l l connecting device of the second embodiment of the invention.

Similar letters of reference refer to siinilar parts througl'iout the everal tigurts. 4 In Fig.1 0, designates air regenerat ing cart-ridge, Z; the cartr dge apertures at each end, 0 the air inlet box and o the air outlet box of the a conduitol the apps" ratus, Zr, m a connecting i'neans for holding in position the said boxes, a t the coir meeting nipples of the latter, and i2 and it the flanges secured to the boxes and respectively.

in the upper part of Fin". Ti and in 3 to 6 (i designatesthe i ilientor elastic annular washer and e and r the annular plates. i

The plates f and e and the washer e are put upon the nipple 2 in the manner disclosed by F l and the washer (i is secured lo the base ilaiige h forming a seat for the swirl washer by means of a ring g fixed to the flange it by means of serews o. The aperture 7/- of the cartridge (4 bears or rests against the washer (Z which is movable by means of the construction and arrangement shown in the manner of a vibratory plate or membrane.

in the example illustrated in the lower part of Fig. 1 and in Figs. 7 to 9 the aiinu lar elastic washer d which here firmly surrounds the coniiectiiignipple t with which it forms an air-tight :int, is secured to the flange oi. the plate by means of screws 0 in order to prevent it from becoming loose, and the plate f is securedto the base flange 1701 by means of loosely placed screw bolts 30 located in the axis of vibration of the plate 1.

I elaii interposed between the hie pla' Washer and one end of the nipple. v v

2. In a device of the character described,

the combination with a hollow nipple adapted to project through an apes are in said body, a flexible member surrounding the nipple and on which the end of said horlv is supported, and a universally movable plate movable independently of the body, of a body interposed between the washer and one end of the nipple.

3. In a device of the character described, the combination with a hollow body, of a nipple adapted to project through an aperture in said body, a flexible Washer sur' rounding the nipple and adapted to engage the end of said body, means to connect the outer edge of the washer with the nipple, and universally movable annular plates upon which the washer rests.

4:. In a device of the character described, the combination with a hollow body, of a nipple adapted to project through an aperture in said body, a flexible washer surrounding the nipple and. having its outer ALEXANDER BERNHARD DRKGER.

Witnesses:

- FRIEDRICH GLATH,

J OHS. WULF. 

